Main Activity Layout

activity_main.xml

  <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">

        <androidx.viewpager2.widget.ViewPager2
            android:id="@+id/my_viewpager"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toTopOf="@+id/bottom_bar" />

        <com.google.android.material.bottomnavigation.BottomNavigationView
            android:id="@+id/bottom_bar"
            android:layout_width="match_parent"
            app:menu="@menu/menu"
            android:layout_height="wrap_content"
            app:layout_constraintBottom_toBottomOf="parent" />


    </androidx.constraintlayout.widget.ConstraintLayout>